Category Archives: Linux

Comparing Juniper Wistar to Eve-NG

Wistar is a tool to build virtual labs with Juniper gear. The main attraction is its ability to abstract devices consisting of separate machines in a single node in your topology. Wistar belongs in the realm of software like Eve-NG or GNS3 and brings some unique features to the table. Read on to find out more and see how it compares.

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Persistent changes to machines in Eve-NG

When using Eve-NG, most x86-based virtualization happens via Qemu. You place a so-called base image in your Eve-NG machine and that image gets used by all of your nodes. Active nodes exist as a linked clone of the base image. I ran into the need to make some persistent changes to a base image. I did not want to set up another machine just to adjust my images so I figured out how to use my Eve-NG machine to do it. Read on to find out how.
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Ansible and Cisco IOS intro

You can use Ansible to do a whole lot of tasks for you. I’ve been doing some basic tasks on Cisco IOS devices. In this article, I’ll show you how to get started with Ansible for Cisco IOS by providing some background information, some pointers and an example. For the lab setup, Eve-NG with Cisco IOL devices is being used.
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Ansible inventory considerations

Recently I’ve been making my first steps with Ansible. I’ve barely scratched the surface and the tool is already awesome. Some things are pretty complicated to grasp however, that’s why I want to share some basic information. This article is about the different choices you can make regarding inventory files.
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